Onan marquis 5500 generator
Purchased a motorhome recently and the onan generator is acting up? Starts and seems to run fine but when you fire up one or both ac's the generator seems to bog down for 2 seconds then idles right ba...
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I had a Kohler 4000 generator that was doing the same thing. After doing all the repairs you mentioned I replaced the voltage regulator and it was fixed. The dealer where I bought the RV did the diagnostics and then I got the part and did the installation.
Good luck with yours.
Bob Cabanas
Good luck with yours.
Bob Cabanas
